Note 12 - Income Taxes (Detail) - Income tax provisions: (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Federal:
Current	$ 2,834	$ 3,132
Deferred	627	492
Total federal tax provision	3,461	3,624
State and Local:
Current	581	713
Deferred	277	221
Total state and local tax provision	858	934
Total income tax provision	$ 4,319	$ 4,558